package com.common.help.test20;

public class StringTest {

	public static void main(String[] args) {
		 StringBuilder x = new StringBuilder("A");
			StringBuilder y = new StringBuilder("B");
			StringTest.changebuild(x,y);
			//y = x;
			System.out.println(x);
			System.out.println(y);
			}
	public static void changebuild(StringBuilder x,StringBuilder y){
		x.append(y);
		y.append("b");
		
		double a = 0.01D;
		System.out.println(Integer.valueOf((int) (a*100)));
	}
}
